Nevertheless, deformed lamina fractures were ... Objective : Delayed hinge fracture (HF) that develops after cervical open ... A green-stick deformation of the.
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http://dx.doi.org/10.3340/jkns.2016.59.4.368
Print ISSN 2005-3711 On-line ISSN 1598-7876
Copyright © 2016 The Korean Neurosurgical Society
J Korean Neurosurg Soc 59 (4) : 368-373, 2016
Clinical Article
Risk Factors for Delayed Hinge Fracture after Plate-Augmented Cervical Open-Door Laminoplasty Junseok W. Hur, M.D., Ph.D.,1,2 Youn-Kwan Park, M.D., Ph.D.,1 Bum-Joon Kim, M.D., Ph.D.,1,3 Hong-Joo Moon, M.D., Ph.D.,1 Joo-Han Kim, M.D., Ph.D.1 Department of Neurosurgery,1 Korea University Guro Hospital, Seoul, Korea Department of Neurosurgery,2 Korea University Anam Hospital, Seoul, Korea Department of Neurosurgery,3 Korea University Ansan Hospital, Ansan, Korea Objective : Delayed hinge fracture (HF) that develops after cervical open door laminoplasty can be a source of postoperative complications such as axial pain. However, risk factors related to this complication remain unclear. We performed a retrospective clinical series to determine risk factors for delayed HF following plate-only open-door cervical laminoplasty. Methods : Patients who underwent plate-only open-door laminoplasty and had available postoperative computed tomography (CT) scans (80 patients with 270 laminae) were enrolled. Hinge status, hinge gutter location, open location, hinge width, number of screws used, operation level, and open angle were observed in the CT to determine radiographic outcome. Demographic data were collected as well. Radiographic and clinical parameters were analyzed using univariate and multivariate logistic regression analysis to determine the risk factors for HF. Results : Univariate logistic regression analysis results indicated poor initial hinge status, medially placed hinge gutter, double screw fixation on the elevated lamina, upper surgical level, and wide open angle as predictors for HF (p
